-ic c-- ccc cci cco ccr ccs cct ccv ci- cic cii cio cir cis cit civ co- coc coi coo cor cos cot cov crc cri cro crr crs crt crv csc csi cso csr css cst csv ctc cti cto ctr cts ctt ctv cvc cvi cvo cvr cvs cvt cvv i-v icc ici ico icr ics ict icv iic iii iio iir iis iit io- ioc ioi ioo ior ios iot iov ir- irc iri iro irr irs irt irv is- isc isi iso isr iss ist isv itc iti ito its itt itv ivc ivi ivo ivr ivs ivt ivv o-i oc- occ oci oco ocr ocs oct ocv oic oii oio oir ois oit oiv oo- ooc ooi ooo oor oos oot oov or- orc ori oro orr ors ort orv os- osc osi oso osr oss ost osv ot- otc oti oto otr ots ott otv ov- ovc ovi ovo ovs ovv rcc rci rco rcr rcs rct rcv ric rii rio rir ris rit riv roc roi roo ror ros rot rov rrc rri rrr rrs rrt rsc rsi rso rsr rss rst rsv rtc rti rto rtr rts rtt rtv rvc rvi rvo rvr rvs rvt rvv scc sci sco scr scs sct scv sic sii sio sir sis sit siv soc soi soo sor sos sot sov sr- src sri sro srr srs srt srv ss- ssc ssi sso ssr sss sst ssv stc sti sto str sts stt stv svc svi svo svr svs svt svv tcc tci tco tcr tcs tct tcv tic tii tio tir tis tit tiv to- toc toi too tor tos tot tov trc tri tro trr trs trt trv tsc tsi tso tsr tss tst tsv ttc tti tto ttr tts ttt ttv tvc tvi tvo tvr tvs tvt vcc vci vco vcr vcs vct vi- vic vii vio vir vis vit viv voc voi voo vor vos vot vov vrc vri vrr vrs vrt vsc vsi vso vsr vss vst vsv vtc vti vto vtr vts vtt vtv vvc vvi vvo vvr vvs vvt vvv